Amylase-containing granular detergent compositions
CA 2187518 C · Owner: Hall, Robin Gibson · Inventors: Brooker, Anju Deepali; Hall, Robin Gibson; Dodd, Ian Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A granular detergent composition containing an amylase a polymeric dye transfer inhibition agent and less than 2 % by weight of, a dispersing agent being a homopolymer of acrylic acid or copolymer of maleic and acrylic acid or salt thereof with an average molecular, weight above 1,000 or a polyethylene glycol with a molecular weight below 4,000.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed April 17, 1995 and granted June 13, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 17, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 17, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.